Question

Determine the atmospheric pressure at a location where the barometric reading is 745 mmHg. Take the specific gravity of mercury to be 13.6.

Answer 1

The atmospheric pressure at the location with a barometric reading of 745 mmHg is approximately 10132 mmHg.

Step-by-step explanation:

The atmospheric pressure at a location can be determined using the barometric reading. The barometric reading is given as 745 mmHg. To convert this to atmospheric pressure, we can use the standard atmospheric pressure at sea level, which is approximately 760 mmHg. We can use a ratio to find the atmospheric pressure:

Atmospheric Pressure / Barometric Reading = Specific Gravity of Mercury

Substituting the given values:

Atmospheric Pressure / 745 mmHg = 13.6

Solving for Atmospheric Pressure:

Atmospheric Pressure = 745 mmHg × 13.6 = 10132 mmHg

Therefore, the atmospheric pressure at the location is 10132 mmHg.

Answer 2

Step-by-step explanation:

Given

Barometric reading
`h_(g)=754\ mm\ of\ Hg`

The above value is pressure head, so converting into Pressure

`P=\rho * g* h`

where
`\rho =`density of mercury

g=acceleration due to gravity

h=height

`P=13.6* 10^3* 9.8* 0.754`

`P=100.49\ kPa`